import java.util.Scanner;
public class Test3 {
    public static void num(int n) {
        if (n > 9) {
            num(n / 10);
        }
        System.out.println (n % 10);
    }
    public static void main(String[] args) {
        Scanner sca=new Scanner(System.in);
        System.out.println("请输入你要打印的数字");
        int a= sca.nextInt();
        System.out.println(a);
    }
}
